I contacted the developer again. When I asked a few months back that results of test page have the version number so that we could be sure to be comparing same versions, they added it the very next version. Good people. Here is what they had to say about newest version:

Hi;
The forward context on DP2 is still ‘beta’, and it is not fully implemented yet : There is only the detection, the export (which was not working on MacOSX Lion). The rendering are already there but not activated.

A version of OpenGL Extensions Viewer 4.0 will probably release when Lion will be available, adding the support for 64bit but won’t be able to work on Power PC system.
Thanks;